I guess it depends on perspective. Of course when something goes wrong it seems expensive because it's an unexpected expense, but it's probably all relative these days. I don't think there are too many newish cars out there that aren't 'expensive' to repair.
The Cougar can just be a bit problematic due to rarity and workshops not knowing how to deal with them.
Aside from that, they're excellent cars to own and drive and I still get a smile from driving it everyday
Dan